<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
    <script  src="../js/jquery-3.3.1.min.js"></script>
    <script>
        function selectAll(obj){
            $(".itemSelect").prop("checked",obj.checked);
        }

    </script>
</head>
<body>
<table id="tab1" border="1" width="800" align="center" >
    <tr>
        <td colspan="5"><input type="button" value="删除"></td>
    </tr>
    <tr>
        <th><input type="checkbox" onclick="selectAll(this)" ></th>
        <th>分类ID</th>
        <th>分类名称</th>
        <th>分类描述</th>
        <th>操作</th>
    </tr>
    <tr>
        <td><input type="checkbox" class="itemSelect"></td>
        <td>1</td>
        <td>手机数码</td>
        <td>手机数码类商品</td>
        <td><a href="">修改</a>|<a href="">删除</a></td>
    </tr>
    <tr>
        <td><input type="checkbox" class="itemSelect"></td>
        <td>2</td>
        <td>电脑办公</td>
        <td>电脑办公类商品</td>
        <td><a href="">修改</a>|<a href="">删除</a></td>
    </tr>
    <tr>
        <td><input type="checkbox" class="itemSelect"></td>
        <td>3</td>
        <td>鞋靴箱包</td>
        <td>鞋靴箱包类商品</td>
        <td><a href="">修改</a>|<a href="">删除</a></td>
    </tr>
    <tr>
        <td><input type="checkbox" class="itemSelect"></td>
        <td>4</td>
        <td>家居饰品</td>
        <td>家居饰品类商品</td>
        <td><a href="">修改</a>|<a href="">删除</a></td>
    </tr>
</table>
</body>
</html>